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翰林B4課p227_9
Author:
廖傑成
翰林B4課p.227_9
GeoGebra
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兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
異分母分數減法
直角坐標平面上的旋轉變換
兩位數加法
Discover Resources
定积分的概念（移动端）
x^4 vs. x^2
最短
All in one (Centres of triangle)
任務4的副本
Discover Topics
Rational Numbers
Piecewise Functions
Correlation
Curve Sketching
Integral Calculus